SU1610213A1 - Installation for roasting cement clinker - Google Patents

Abstract

The invention relates to devices for the heat treatment of raw materials in rotary kilns and can be used in the building materials industry in the production of portland cement clinker in the wet production method. The purpose of the invention is to reduce fuel consumption and increase productivity due to the separate supply of sludge and raw meal. For this, the charging end of the furnace 1 is made with the pipeline 8 of raw meal and is moved outside the dust precipitation chamber 6. The heat exchangers 4 are installed around the furnace body and are combined by the feed end of the common shell 5 located in the dust precipitation chamber 6 and connected to the slurry pipeline 7, thereby Separate movement in the same direction of raw meal and sludge. 1 il.

Description

one

(2t) 4607097 / 23-33

(22) .21.11.88

(46) 11/30/90. Bul №.44

(71) State All-Union Institute for Design and Scientific Research Works Yuzhgiprocemeat

(72) B, -C, P. Ivanitsky, P, M, Zlatokrylov, B.C. Chyokrygin and V.P. Mavlo

(53) 666.94.041 (088.8)

(56) Copyright Certificate Czechoslovakia №. 1037029, cl. F 27 B 7/00, 1982.

(54) INSTALLATION FOR BURNING A CEMENT CLINKER

(57) The invention relates to devices for the heat treatment of raw materials in rotary kilns and may

to be used in the production of construction materials in the production of portland cement clinker in the wet production method. The purpose of the invention is to reduce fuel consumption and increase productivity due to the separate supply of sludge and raw meal. For this, the charging end of the furnace 1 is made with the pipeline 8 of raw meal and is placed outside the dust precipitation chamber 6, Heat exchangers 4 are installed around the furnace body and are connected by a feed end with a common shell 5 located in the dust precipitation chamber 6 and connected to the slurry pipe 7, the expense of which is the separation of Dividing one-way raw meal flour and sludge 1 silt,

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The invention relates to devices for heat treatment of raw materials in rotary kilns and can be used in the industrial construction materials for the production of portland cement clinker in the wet production method.

The purpose of the invention is to reduce fuel consumption and increase productivity due to the separate supply of sludge and raw meal.

The drawing shows the installation scheme of baking cement clinker "

The cement burner, clinker plant contains a rotary kiln 1, in the loading and unloading parts of which there are burners 2 and 3 dp fed to the process fuel kiln. Heat exchanging devices 4 are installed around the furnace body 1 from the side of its loading part, for example, heat exchangers of the recuperative type are connected at one end to the internal space of the furnace -1 heat exchangers 4 are united by a common shell 5 concentrically located in the dust precipitation chamber 6 around the furnace body with the sludge line 7. The charging end of the kiln 1 is filled with the pipeline 8 of raw meal, brought out of the boundaries of the dust-collecting chamber 6 and contains the head 9 S B of the dust-absorbing a-6 there is a flue 10 for exhaust

of gases

Installation for burning cement clinker works as follows.

The supply of fuel to the furnace 1 is carried out by the burners 2 and 3 into the loading and unloading parts in a ratio of 50: 50%. In the same ratio, raw meal flour is supplied with separate streams, and slime o.

The feeding of flour is carried out through the charging part of the furnace 1 to the torch, which forms during the combustion of the fuel of the burner 2, thus ensuring its rapid heating and partial decarbonization. In this case, the movement of the raw meal and the gases to be produced from the burner 2 is continuous.

The sludge is fed into the furnace through the shell 5, and then evenly over all heat exchangers 4,

Sludge drying in heat exchangers 4 occurs due to the flow of gases coming from burners 2 and 3. The flow of gases and sludge is countercurrent.

The movement of the raw meal through the furnace 1 and the sludge in the heat exchangers 4 is carried out separately in one direction.

Dried sludge and partially decarbonated raw meal heated are combined into a single stream at the site of the gases entering the heat exchangers 4, which continues to move towards the discharge part of the furnace 1 towards the gases coming from the burner 3. All the physicochemical formation processes occur in the material clinker, which is then sent to the refrigerator.

The proposed design of an installation of cement cement clinker firing in a wet production method improves the furnace performance and lining durability by reducing the furnace heat stress, as well as reducing fuel consumption by reducing heat consumption for slurry moisture evaporation, which also reduces the temperature of the exhaust gases and moistens them before cleaning in electrostatic precipitators, while reducing the gas flow rate at each section of the furnace, which leads to a decrease in dust

Claims (1)

Invention Formula I. A cement clinker kiln containing a rotary kiln with a burner in the discharge part, heat exchange devices, a dust precipitation chamber and a sludge line, which, in order to reduce fuel consumption and increase productivity by separately feeding sludge and raw meal, the kiln feed end performed with raw meal pipelines and moved out of the rear slug chamber, heat exchangers are installed around the kiln body and are united by a common end face with a common shell located in Separation chamber and connected to the slurry pipe